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R. STOCKBR. QUILTING MACHINE.

No. 424,437. Patented Mar. 25, 1890.

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' UNITED i STATES 1PATENT OFFICE. l

RUDOLF STOCKER, OF NET YORK, Y., ASSIGNOR TO LOUIS. SOHULTZ AND JOHN B. HAGENBUOHLE, OF SAME PLACE.

QUILTlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 424,437, dated. March 2 5, 189..

` Application tiled May 25, 1889. Serial No. 312,073. (No model.)

To all whom it may concern:

Be it known that I, RUDOLF SrocKER, of New York, in the county and State of New York, have invented a certain new and useful Improvement in Quilting-Machines, of which the following is a specification.

I will describe a quilting-machine embodying my improvement, and then point out the novel features in the claims.

In the accompanying drawings,Figure l is a front view of a quilting-machine embodying my improvement, certain parts being broken away to enable others to be seen. Fig. 2 is an end view of the machine, certain end bearings and driving-pulleys being omitted. Fig. 3 is a plan of a portion of the machine, illustrating the improvement, the upper portion of the carriage-supportin g needles being broken away. Fig. 4c is a top view of cams and bowls which operate in connection therewith, one cam being employed for reciprocating a movable carriage comprised in the machine and the other cam being employed for rotating the feed-rollers. Fig. 5 is a view looking toward the end of the machine and illustrating certain modiiications. Fig. Gis a plan of the parts illustrated in Fig. 5. Fig. 7 illustrates a piece of quilting which may be done with this machine.

Similar lettersV of reference designate corresponding parts in all the figures.

A designates the main frame of the machine. It consists, essentially, of a bed-piece a, supported by legs a. To. the bed are secured two side frames a2 a2. These rise from the front of the bed and extend over rearwardly and downwardly to the back.

B designates an apron over which the fabric to be quilted is fed. This apron may. be made of sheet metal, and is shown as secured by rods b to the side frames o2a2. It extends upwardly from near the front of the bed and then rearwardly on a curve to a plane suitable for presenting the fabric to the needles C.

The apron B is of course stationary. There is a bar D near the bottom of the apron over which the fabric to be quilted may pass before reaching the apron.

The fabric to be quilted is fed beneath the needles C by means of feed-rollers E E2, between which it passes. These feed-rollers imceive the journals of the roller E2.

part but one movement to the fabric, and that is a movement from the front toward `the rear or back of the machine beneath the needles. This machine is not organized to impart to the fabric a lateral movement. The feed-rollers are geared together by pinions e e2, affixed to the journals at one end of the rollers. The roller E is incapable of any bodily movement, it being journaled in the side frames a2 a3. The roller E2 is j ournaled in arms e. There are two of these arms, and they are fulcrumed between their ends to the side frames a2 d2. At the front end they re- At the rear end they are connected with springs e2, which pull them upwardly, and hence force the roller E2 with greater or less force toward the roller E. The springs c3, being connected to screws c4, may be varied in tension at will. 'The feedrollers are driven through a gear-wheel c5, affixed to one of the journals of the roller E. Vith this gear-wheel c5 a gear-wheel e( engages. This gear-wheel e6 is supported at one end of a lever e7, which is fulcrumed between the ends to the side frame e2, and at the other end has a slot which is concentric with this fulcrum. A screw es, passing through this slot and entering the side frame a2, serves to clamp the lever in different positions. By mounting the gear-wheel e6 upon an adjustable lever provision is afforded for taking off the gear-wheel e5 and substituting for it one of a different size. The gear -wheel c6 engages with a gear-wheel e9, which is mounted loosely upon the driving shaft S. As here shown, this gear-wheel is not mounted upon the driving shaft proper, but is mounted upon a socket s, which is fastened to the driving-shaft and interlocks with a shaft S', which is, in fact, a part of the driving-shaft, but which slides longitudinally relatively to the driving-shaft proper, although interlocked so as to rotate with the latter.

'Ihe gear-wheel e9 does not derive any motion from the driving-shaft; but the latter simply affords a support for it. One side of its hub rests against a shoulder on the socket s and the other side against a pin or pins, it being thus held in place.

The gear wheel e9 engages with a gearwheel ew and it derives motion from the lat- IOC) ter. The gear-wheel 610 is affixed to a shaft @11, supported in bearings @12 e13, mounted on the bed-piece a. The hub of the gear-wheel e10 at one end of the shaft 611 and a collar @14 on the other end of the shaft @11 preclude any longitudinal movement of this shaft in its bearings. Afiixed to the shaft 011 isa clutchpiece @15, having on its two ends ratchet-teeth with their faces extending in the same direction, as may be best understood by reference to Fig. 3. I have shown this clutch-piece made in two sections, and as being secured to the shaft 611 by set-screws e16. On the shaft e11 are loosely mounted gear-wheels @17 618, having hubs furnished with ratchet teeth adjacent ends of the clutch-piece e15. The gear-wheels slide lengthwise of the shaft @11, and are forced toward the clutch-piece by springs @19. The gear-wheel @17 engages with a rack-bar e2, extending beneath it. The gear-wheel 618 engages with a rack-bar @21, eX- tending above it. These rack-bars connect with a reciprocating plate @22. The main portion of this plate is guided in a bearing @23, and the rack-bars are guided in bearings @24 c25, friction rollers being arranged to sustain those sides which will be under pressure. As the-plate e322 reciprocates it will rotate both pinions; but it will never impart motion to the shaft e11 except through one. When it rotates rearwardly, it will impart motion to the shaft e11 through the rack-bar 621 and the pinion 618, and the pinion @17 will run free of the clutch-piece. When the plate 622 moves forwardly, it will transmit motion to the shaft 611 through the rack-bar e320 and the pinion @17, and the pinion 618 will then run free. A continuous rotary motion will thus be imparted by the plate @22 to the shaft 611.

The plate @22 is provided with bowls e2?, bearing against a cam E. This cam is mounted upon an upright shaft @23, provided with a worm-wheel @29, engaging with a Worm e30, carried by the driving-shaft S. It will be readily understood that the driving-shaft thus iniparts a continuous motion to the shaft @28, and

that the latter, through the plate @22, reciprocates the shaft @11 and through the latter operates the feed-rollers.

The particular cam shown is designed for the production of the pattern illustrated in Fig. 7. The steps of the cam, it will be seen, are more sharply defined at some points than others. This is necessary for the particular pattern illustrated.

The needles C are secured to a needle-bar C', guided by brackets c, secured to a horizontal bar c', forming part of a carriage C2, which is free to reciprocate laterally or widthwise of the machine, being supported by rollers C3 on the bed-piece of the machine. The needle-bar is reciprocated vertically by a rock-shaft C4, arranged in the carriage C2. The carriage C2 has a bar c2 provided with bowls c3, which bear against a cam C5. This cam is afxed to the shaft @28.

It will be readily understood that the carriage moves the needles laterally over the fabric while the latter is moved longitudinally beneath them. vThe cams vary the speed of the movements of the carriage and feed-rollers which feed the fabric, and in this way cause sinuous, curved, or angular lines of stitching to be worked upon the fabric. adapted to engage with the ratchets on the In Figs. 5 and 6 a slight modification is illustrated. Here only the cam E is affixed to the shaft @28. The cam C5 is in this modification affixed to a shaft c4. The shaft c4 has affixed to it a gear-wheel c5, which engages with a gear-wheel c1", affixed to the shaft 628. The other parts are like the principal example of the improvement except that, instead of having the wheel e6 adjustable, an adj ust-- able wheel 635 is used. The wheel @10 can therefore be removed and replaced by a wheel of different size.

What I claim as my invention, and desire to secure by Letters Patent, is

l. In a quilting-machine, the combination, with a series of needles and feed-rollers for moving the fabric to be Worked lengthwise beneath the needles, of a shaft for driving the feed-rollers, a clutch-piece aiiixed to this shaft, gear-wheels loosely mounted on this shaft and constructed to engage with the clutch-piece, reciprocating /rack-bars engaging the gearwheels, one .being arranged above its gearwheel and the other below its gear-wheel, and the two rack-bars being connected, and a cam for reciprocating the rack-bars, substantially as specified.

2. In a quilting-machine, the combination, with a series of needles arranged upon a laterally-reciprocating carriage, and feed-rollers supported on the xed framing of the machine, of a cam for reciprocating the carriage, a cam for operating thefeed-rollers, rack-bars reciprocated by the last-named cam, gearwheels arranged one below a rack-bar andthe other above the other rack-bar, a shaft upon which these gear-wheels are loosely mounted, a clutch-piece afiixed to this shaft and with which the gear-wheels may be engaged, and gearing between this shaft and one of Athe feed-rollers, substantially as specified.

RUDOLF STOCKER.

Witnesses:

C. T. WAGNER, P. OTTO.

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